Q:
Is there a way we can add javascript behaviors to the sliding dhtml menu actions? For
example, is there a way we can add an onClick function to a menu item (eg,
onClick="return MyFunction( )" ) so that we can catch and process key
events?

A:
Unfortunately, you can't assign onmouseover/onClick/onContextMenu event to each item.
However, you can achieve this by using standard html objects within
items, for example:

var menuitems = [
["

item text

", ""]
];

You can use your own Javascript code instead standard links. For example: